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(C) The electric potential $V$ due to a point charge $q$ at a distance $r$ is given by $V = \frac{kq}{r}$.For two identical positive charges $q$ place

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(C) The electric potential $V$ due to a point charge $q$ at a distance $r$ is given by $V = \frac{kq}{r}$.For two identical positive charges $q$ placed at $x = -a$ and $x = a$,the total potential at any point $x$ is $V(x) = \frac{kq}{|x+a|} + \frac{kq}{|x-a|}$.$1$. As $x 	o a$,$V 	o +\infty$. As $x 	o -a$,$V 	o +\infty$. This means the potential must show vertical asymptotes at $x = a$ and $x = -a$.$2$. At the origin $(x = 0)$,the potential is $V(0) = \frac{kq}{a} + \frac{kq}{a} = \frac{2kq}{a}$,which is a positive finite value.$3$. As $x 	o \pm\infty$,$V 	o 0$.Comparing these properties with the given graphs,the potential is positive everywhere and has a local minimum at the origin between the two charges. Graph $C$ correctly represents this behavior,showing a $U$-shaped curve between the charges and approaching zero at infinity.

Two identical positive charges are placed at $x = -a$ and $x = a$. The correct variation of potential $V$ along the $x$-axis is given by:

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